/*
 * MIT License
 *
 * Copyright (c) 2023 北京凯特伟业科技有限公司
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
package com.je.bpm.engine.impl.cmd;

import com.google.common.base.Strings;
import com.je.bpm.core.model.BpmnModel;
import com.je.bpm.core.model.FlowElement;
import com.je.bpm.core.model.task.KaiteBaseUserTask;
import com.je.bpm.engine.ActivitiException;
import com.je.bpm.engine.ActivitiObjectNotFoundException;
import com.je.bpm.engine.RepositoryService;
import com.je.bpm.engine.impl.interceptor.Command;
import com.je.bpm.engine.impl.interceptor.CommandContext;
import com.je.bpm.engine.impl.persistence.entity.TaskEntity;
import com.je.bpm.engine.task.Task;

import java.io.Serializable;
import java.util.Map;

/**
 * 获取当前任务节点信息
 */
public class FindCurrentElementCmd implements Command<KaiteBaseUserTask>, Serializable {

    private static final long serialVersionUID = 1L;
    protected String executionId;
    protected String taskId;
    protected Map<String, Object> bean;
    protected String pdid;

    public FindCurrentElementCmd(String pdid, String executionId, String taskId, Map<String, Object> bean) {
        this.executionId = executionId;
        this.taskId = taskId;
        this.pdid = pdid;
    }

    @Override
    public KaiteBaseUserTask execute(CommandContext commandContext) {
        if (Strings.isNullOrEmpty(taskId)) {
            throw new ActivitiObjectNotFoundException("Cannot find task with id " + taskId, Task.class);
        }
        TaskEntity task = commandContext.getTaskEntityManager().findById(taskId);
        if (task == null) {
            throw new ActivitiObjectNotFoundException("Cannot find task with id " + taskId, Task.class);
        }
        if (task.isSuspended()) {
            throw new ActivitiException("this task is suspended");
        }
        return findElement(commandContext, task);
    }

    private KaiteBaseUserTask findElement(CommandContext commandContext, TaskEntity task) {
        RepositoryService repositoryService = commandContext.getProcessEngineConfiguration().getRepositoryService();
        BpmnModel bpmnModel = repositoryService.getBpmnModel(task.getProcessDefinitionId());
        FlowElement taskFlowElement = bpmnModel.getFlowElement(task.getTaskDefinitionKey());

        if (taskFlowElement == null) {
            throw new ActivitiException(String.format("Can't find task %s definiton from the process.", task.getName()));
        }
        KaiteBaseUserTask kaiteTask = (KaiteBaseUserTask) taskFlowElement;
        return kaiteTask;
    }

}
